W3C home > Mailing lists > Public > w3c-rdfcore-wg@w3.org > November 2002

Re: More on XSD in RDF

From: Patrick Stickler <patrick.stickler@nokia.com>
Date: Tue, 26 Nov 2002 09:13:09 +0200
Message-ID: <001f01c2951b$46c841e0$4b9316ac@NOE.Nokia.com>
To: "ext Jeremy Carroll" <jjc@hplb.hpl.hp.com>, <w3c-rdfcore-wg@w3.org>, "ext Brian McBride" <bwm@hplb.hpl.hp.com>



[Patrick Stickler, Nokia/Finland, (+358 40) 801 9690, patrick.stickler@nokia.com]

> >If XML Schema says that xsd:float and xsd:decimal have disjunct value spaces,
> >we may wish to disagree and consider that a bug, but that doesn't affect how
> >those datatypes are modeled in RDF. It simply means that the assertion
> >
> >    xsd:decimal rdfs:subClassOf xsd:decimal .
> 
> Oh I hope that's a type.  If Schema doesn't agree to that we are in 
> trouble.  Did you mean something like
> 
>    xsd:integer rdfs:subClassOf xsd:decimal .

Yes. Sorry. Typo. I meant

   xsd:decimal rdfs:subClassOf xsd:float .

> I think I find myself agreeing strongly with Patrick here.  

Hold one... have to check outside my window to make sure
the sky hasn't fallen....  ;-) ;-) ;-)


>    o I suggest:
> 
>    - we use non controversial examples of schema datatypes in our test 
> cases - stay away from the stuff that tests understanding of schema 
> datatypes more than rdf
> 
>    - we propose through the coordination group the writing of note jointly 
> by folks from rdfcore and xml schema datatypes which defines the RDF schema 
> for XML Schema datatypes.
> 
>    - that we write that note after last call and before proposed rec

I think the first two proposals are definitely what we should do. The
timing of the third may be a bit rushed. Since the subtleties of the
XML Schema datatypes within the RDF Datatyping context may take time
to work out fully, and will be significant for some time to come, I'd
rather see it done right than done quickly. Perhaps we could aim to have
at least a draft of a note before proposed rec. Of course, if we can
get the finished note before then, great, but I think it is better not
to bind the two activities too tightly, especially since it really doesn't
affect the RDF specs at all.

Patrick
Received on Tuesday, 26 November 2002 02:13:13 EST

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